#include <iostream>
using namespace std;

void func(int a=2,int b=2,int c=2);

void func(int a,int b,int c)
{
    cout<<"a = "<<a<<endl;
    cout<<"b = "<<b<<endl;
    cout<<"c = "<<c<<endl;
}

int main ()
{
    int a = 1;
    func(4);
    cout<<"----------"<<endl;
    func(a,8,9);
    cout<<"----------"<<endl;
    func();
}